Explosive-engine.



EXPLUSIV'E ENGINE.

(Application iiled June 12,\1901.)

(No Model.)

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THE Noims PFIERS CO, PHOTOLTHO., wAsHmGYON. n. c,

UNITED STATES PATENT OFFICE.

JAMES F. HILL, OF FLEETWOOD, PENNSYLVANIA.

EXPLOSlVE-ENGINE.

SPECIFICATION forming part of Letters Patent N o. 711,628, dated October 21, 1902.

Application filed June 12,1901. YSerial No. 64.227. (No model.)

To @ZZ whom, it may concern,.-

Beit known that l, JAMES F. HILL, a citizen of the United States, residing at Fleetwood, in the county of Berks-and State of Pennsylvania, have invented'c'ertain new and useful Improvements in Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in explosive-engines. Y

The invention illustrates an improvement in engines of this class, and has for its object to produce a maximum of power with a minimum of fuel.

To this end my invention consists of the details of construction and arrangement of the several parts, as more fully described 'in the following speciication and as illustrated in the accompanying drawing, in which the iigu re is a longitudinal section of the cylinder of an engine embodying the features of my invention.

The cylinder Ahas the usual'inlet and eX Y haust valves and means for, operating them, is formed with a water-jacket B, and has the usual attachments for an explosive-engine. It is, however, somewhat longer than is usual for the purpose of permitting the unusually long stroke I attain. An air inlet or valve C of ordinary construction is located in the cylinder A near the center and` at the pointV where the piston in the usual construction.

would stop at the end of the stroke. By this I mean that my cylinder is just twice the length of the ordinary cylinder used in this operated by suction, while the ,exhaust-valve' F is operated through the arm I, which is connected to the bar H, so as to give it the proper movement.

When the explosion takes place, the piston D is forced'the full stroke, and on its return the exhaust-valve F will open and the piston' return for the next action of drawing the charge. `The valve E will open by suction immediately on the start or initial movement of the piston and a charge will be drawn until the pistonreaches the position in which it is shown in the drawing-thatr is, until it has traveled a distance equal to that usually trav eled bythe pistons in this class 'of engines during their full stroke, but which in my construction is just one-half of the stroke. At this pointis located an air-inlet valve C, and said valve will open automatically, thus permitting an inlet of air to the cylinder and allowing the piston to travel, in addition, a distance equal to that already traveled. The inlet-valve E closes immediately on the opening of thevalve C. The return of the piston will entirely exhaust the airvthus taken in through the valve C, and with it all of the dead gas remaining after the prior explosion. `The valve C will close automatically, and the continued movement of the piston will compress the gas for the-next explosion. l It'will be seen that with a given amount of fuel I secure twice the 'stroke and twice the crank movement.

Having thus fully described my invention, what I claim, and desire to secure by Letters In an explosive-gas'engine, the combination with a cylinder and a piston, a chargeinlet valve, an exhaust-valve at one end, and

lan air-inlet valve in the cylinder located charge until the air-inlet valve is reached, and adapted to contact with the exhaust and means for then opening said air-valve to valve for opening and closing the same. to admit only air, to allow the piston to travel In testimony whereof I affix my signature a distance equal to that already traveled in presence of two witnesses.

While receiving the charge and for closing .I AMES F. HILL. said valve when the piston has reached the Witnesses:

same point 0n its return stroke, and an arm CHAS. LEITHERSON,

connected to the said valve-operating means, ISAAC B. KLINE. 

